SWA cable installation help

[Simon_]

I'm about to do my first job with SWA cable installing a socket in a shed under a metre from the house. CU is an old wylex CU which was upgraded with RCD protection when the guy had a new kitchen fitted. Would I be ok with the following...
2.5mm t/e to wiska junction box from 30A JB in bungalow loft
2.5mm 3 core SWA from JB with black as cpc to earth bar in box to shed FCU
2.5 t/e to socket

Do I need to connect the banjo tag if the earths are connected together? What size cpc should I use if I need the banjo tag?

 

[Deleted member 19807]

i use pirhana nuts and connect this to your cpc, better then bajo's

also terminate swa onto gland then fit to the box and then mount the box.

if its under 1m do you need swa

 

[Simon_]

Cheers for that. It will have to be SWA as between the shed and house is a small path with a step where the cable will run across under the ground.

 

[ackbarthestar]

If you want to use the armour as a cpc or just bonding it at one end you'll need to use a specific earthing clamp for the wiska boxes.
I think cpc sell them.

 

[Simon_]

If I terminate the swa cable into the metal backbox for the fcu instead of a second JB inside the shed does it need the earth from 3 core swa to back of fcu, back box to fcu and earth clamp to back box? What size cpc cable for earth clamp to back box if needed.

 

[ackbarthestar]

Simon,
Before we can go further with regard to the armour, there are a couple of questions
1/ What are the earthing arrangements at the MET?
2/ What type of shed is it and what extraneous parts are within the shed?

 

[Simon_]

I will check the MET before going ahead. The shed is just a standard wooden shed from any DIY store the shed is empty at the moment but will have a lawnmower and tools kept in there.